| /openbmc/linux/arch/arm64/include/asm/ |
| H A D | asm-extable.h | 819771cc Tue Oct 19 11:02:13 CDT 2021 Mark Rutland <mark.rutland@arm.com> arm64: extable: consolidate definitions
In subsequent patches we'll alter the structure and usage of struct
exception_table_entry. For inline assembly, we create these using the
`_ASM_EXTABLE()` CPP macro defined in <asm/uaccess.h>, and for plain
assembly code we use the `_asm_extable()` GAS macro defined in
<asm/assembler.h>, which are largely identical save for different
escaping and stringification requirements.
This patch moves the common definitions to a new <asm/asm-extable.h>
header, so that it's easier to keep the two in-sync, and to remove the
implication that these are only used for uaccess helpers (as e.g.
load_unaligned_zeropad() is only used on kernel memory, and depends upon
`_ASM_EXTABLE()`.
At the same time, a few minor modifications are made for clarity and in
preparation for subsequent patches:
* The structure creation is factored out into an `__ASM_EXTABLE_RAW()`
macro. This will make it easier to support different fixup variants in
subsequent patches without needing to update all users of
`_ASM_EXTABLE()`, and makes it easier to see tha the CPP and GAS
variants of the macros are structurally identical.
For the CPP macro, the stringification of fields is left to the
wrapper macro, `_ASM_EXTABLE()`, as in subsequent patches it will be
necessary to stringify fields in wrapper macros to safely concatenate
strings which cannot be token-pasted together in CPP.
* The fields of the structure are created separately on their own lines.
This will make it easier to add/remove/modify individual fields
clearly.
* Additional parentheses are added around the use of macro arguments in
field definitions to avoid any potential problems with evaluation due
to operator precedence, and to make errors upon misuse clearer.
* USER() is moved into <asm/asm-uaccess.h>, as it is not required by all
assembly code, and is already refered to by comments in that file.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211019160219.5202-8-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
|
| H A D | asm-uaccess.h | 819771cc Tue Oct 19 11:02:13 CDT 2021 Mark Rutland <mark.rutland@arm.com> arm64: extable: consolidate definitions
In subsequent patches we'll alter the structure and usage of struct
exception_table_entry. For inline assembly, we create these using the
`_ASM_EXTABLE()` CPP macro defined in <asm/uaccess.h>, and for plain
assembly code we use the `_asm_extable()` GAS macro defined in
<asm/assembler.h>, which are largely identical save for different
escaping and stringification requirements.
This patch moves the common definitions to a new <asm/asm-extable.h>
header, so that it's easier to keep the two in-sync, and to remove the
implication that these are only used for uaccess helpers (as e.g.
load_unaligned_zeropad() is only used on kernel memory, and depends upon
`_ASM_EXTABLE()`.
At the same time, a few minor modifications are made for clarity and in
preparation for subsequent patches:
* The structure creation is factored out into an `__ASM_EXTABLE_RAW()`
macro. This will make it easier to support different fixup variants in
subsequent patches without needing to update all users of
`_ASM_EXTABLE()`, and makes it easier to see tha the CPP and GAS
variants of the macros are structurally identical.
For the CPP macro, the stringification of fields is left to the
wrapper macro, `_ASM_EXTABLE()`, as in subsequent patches it will be
necessary to stringify fields in wrapper macros to safely concatenate
strings which cannot be token-pasted together in CPP.
* The fields of the structure are created separately on their own lines.
This will make it easier to add/remove/modify individual fields
clearly.
* Additional parentheses are added around the use of macro arguments in
field definitions to avoid any potential problems with evaluation due
to operator precedence, and to make errors upon misuse clearer.
* USER() is moved into <asm/asm-uaccess.h>, as it is not required by all
assembly code, and is already refered to by comments in that file.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211019160219.5202-8-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
|
| H A D | uaccess.h | 819771cc Tue Oct 19 11:02:13 CDT 2021 Mark Rutland <mark.rutland@arm.com> arm64: extable: consolidate definitions
In subsequent patches we'll alter the structure and usage of struct
exception_table_entry. For inline assembly, we create these using the
`_ASM_EXTABLE()` CPP macro defined in <asm/uaccess.h>, and for plain
assembly code we use the `_asm_extable()` GAS macro defined in
<asm/assembler.h>, which are largely identical save for different
escaping and stringification requirements.
This patch moves the common definitions to a new <asm/asm-extable.h>
header, so that it's easier to keep the two in-sync, and to remove the
implication that these are only used for uaccess helpers (as e.g.
load_unaligned_zeropad() is only used on kernel memory, and depends upon
`_ASM_EXTABLE()`.
At the same time, a few minor modifications are made for clarity and in
preparation for subsequent patches:
* The structure creation is factored out into an `__ASM_EXTABLE_RAW()`
macro. This will make it easier to support different fixup variants in
subsequent patches without needing to update all users of
`_ASM_EXTABLE()`, and makes it easier to see tha the CPP and GAS
variants of the macros are structurally identical.
For the CPP macro, the stringification of fields is left to the
wrapper macro, `_ASM_EXTABLE()`, as in subsequent patches it will be
necessary to stringify fields in wrapper macros to safely concatenate
strings which cannot be token-pasted together in CPP.
* The fields of the structure are created separately on their own lines.
This will make it easier to add/remove/modify individual fields
clearly.
* Additional parentheses are added around the use of macro arguments in
field definitions to avoid any potential problems with evaluation due
to operator precedence, and to make errors upon misuse clearer.
* USER() is moved into <asm/asm-uaccess.h>, as it is not required by all
assembly code, and is already refered to by comments in that file.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211019160219.5202-8-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
|
| H A D | assembler.h | 819771cc Tue Oct 19 11:02:13 CDT 2021 Mark Rutland <mark.rutland@arm.com> arm64: extable: consolidate definitions
In subsequent patches we'll alter the structure and usage of struct
exception_table_entry. For inline assembly, we create these using the
`_ASM_EXTABLE()` CPP macro defined in <asm/uaccess.h>, and for plain
assembly code we use the `_asm_extable()` GAS macro defined in
<asm/assembler.h>, which are largely identical save for different
escaping and stringification requirements.
This patch moves the common definitions to a new <asm/asm-extable.h>
header, so that it's easier to keep the two in-sync, and to remove the
implication that these are only used for uaccess helpers (as e.g.
load_unaligned_zeropad() is only used on kernel memory, and depends upon
`_ASM_EXTABLE()`.
At the same time, a few minor modifications are made for clarity and in
preparation for subsequent patches:
* The structure creation is factored out into an `__ASM_EXTABLE_RAW()`
macro. This will make it easier to support different fixup variants in
subsequent patches without needing to update all users of
`_ASM_EXTABLE()`, and makes it easier to see tha the CPP and GAS
variants of the macros are structurally identical.
For the CPP macro, the stringification of fields is left to the
wrapper macro, `_ASM_EXTABLE()`, as in subsequent patches it will be
necessary to stringify fields in wrapper macros to safely concatenate
strings which cannot be token-pasted together in CPP.
* The fields of the structure are created separately on their own lines.
This will make it easier to add/remove/modify individual fields
clearly.
* Additional parentheses are added around the use of macro arguments in
field definitions to avoid any potential problems with evaluation due
to operator precedence, and to make errors upon misuse clearer.
* USER() is moved into <asm/asm-uaccess.h>, as it is not required by all
assembly code, and is already refered to by comments in that file.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211019160219.5202-8-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
|
| /openbmc/linux/arch/arm64/lib/ |
| H A D | clear_user.S | 819771cc Tue Oct 19 11:02:13 CDT 2021 Mark Rutland <mark.rutland@arm.com> arm64: extable: consolidate definitions
In subsequent patches we'll alter the structure and usage of struct
exception_table_entry. For inline assembly, we create these using the
`_ASM_EXTABLE()` CPP macro defined in <asm/uaccess.h>, and for plain
assembly code we use the `_asm_extable()` GAS macro defined in
<asm/assembler.h>, which are largely identical save for different
escaping and stringification requirements.
This patch moves the common definitions to a new <asm/asm-extable.h>
header, so that it's easier to keep the two in-sync, and to remove the
implication that these are only used for uaccess helpers (as e.g.
load_unaligned_zeropad() is only used on kernel memory, and depends upon
`_ASM_EXTABLE()`.
At the same time, a few minor modifications are made for clarity and in
preparation for subsequent patches:
* The structure creation is factored out into an `__ASM_EXTABLE_RAW()`
macro. This will make it easier to support different fixup variants in
subsequent patches without needing to update all users of
`_ASM_EXTABLE()`, and makes it easier to see tha the CPP and GAS
variants of the macros are structurally identical.
For the CPP macro, the stringification of fields is left to the
wrapper macro, `_ASM_EXTABLE()`, as in subsequent patches it will be
necessary to stringify fields in wrapper macros to safely concatenate
strings which cannot be token-pasted together in CPP.
* The fields of the structure are created separately on their own lines.
This will make it easier to add/remove/modify individual fields
clearly.
* Additional parentheses are added around the use of macro arguments in
field definitions to avoid any potential problems with evaluation due
to operator precedence, and to make errors upon misuse clearer.
* USER() is moved into <asm/asm-uaccess.h>, as it is not required by all
assembly code, and is already refered to by comments in that file.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20211019160219.5202-8-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
|